Activated abilities of creatures you control cost {X} less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana.

{4}{R}{G}: Other creatures you control get +1/+1 and gain trample and haste until end of turn.

Haste

As long as Anger is in your graveyard and you control a Mountain, creatures you control have haste.

{1}{G}: Create a 1/1 green Insect creature token.

{T}: Untap target Forest.

{T}: Add one mana of any color in your commander's color identity.

Haste

Whenever Ardoz, Cobbler of War or another creature enters the battlefield under your control, that creature gets +2/+0 until end of turn.

{3}{R}: Create a 1/1 red Goblin creature token with haste. Activate only as a sorcery.

Equipped creature has haste.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, you may pay {1}. If you do, copy that ability. You may choose new targets for the copy.

Equip {2}

Whenever you cast a creature spell, draw a card.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Scorching Ray -- {8}: Bhaal's Invoker deals 4 damage to each opponent.

Equipped creature gets +1/+1 for each land you control.

Equip legendary creature {3}

Equip {7}

This spell costs {1} less to cast for each creature on the battlefield.

Blasphemous Act deals 13 damage to each creature.

Trample

Equipped creature gets +3/+2 and has trample.

Reconfigure {5} ({5}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Destroy all enchantments you don't control. Then if you control an untapped land, destroy all enchantments you control.

{3}{R}: Gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.

{2}{R}{G}: Create a 2/2 green Wolf creature token.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Trample

Other creatures you control get +1/+0.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Equipped creature gets +1/+0 for each of its colors.

Equip {1}

{7}: Create a token that's a copy of target artifact. That token gains haste. Exile it at the beginning of the next end step.

Creatures you control have "{T}: Add one mana of any color."

Vigilance

{5}{G}, {T}: Draw a card. This ability costs {1} less to activate for each +1/+1 counter on creatures you control.

Each spell costs {3} more to cast except during its controller's turn.

Equipped creature has "Whenever you draw a card, this creature gets +1/+1 and gains flying until end of turn" and "{4}: Draw a card."

Whenever a Wizard creature enters the battlefield, you may attach Diviner's Wand to it.

Equip {3}

{R}: Dragon Whisperer gains flying until end of turn.

{1}{R}: Dragon Whisperer gets +1/+0 until end of turn.

Formidable -- {4}{R}{R}: Create a 4/4 red Dragon creature token with flying. Activate only if creatures you control have total power 8 or greater.

At the beginning of your end step, if you control a creature with power 5 or greater, you may draw a card.

{T}: Add {C}.

{2}{G}: Look at the top three cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

At the beginning of each upkeep, if no spells were cast last turn, transform Duskwatch Recruiter.

Creature spells you cast cost {1} less to cast.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Krallenhorde Howler.

{2}{R}, {T}: Destroy target nonbasic land.

Morph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{3}{G}: Target creature gets +X/+X until end of turn, where X is the number of creatures you control.

Whenever a creature with power 3 or greater enters the battlefield under your control, draw a card.

You may look at the top card of your library any time.

You may cast creature spells from the top of your library.

Creatures you control have "{T}: Add one mana of any color."

{2}{R}, {T}: Create a token that's a copy of target creature card in your graveyard, except it's an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step.

{T}: Add one mana of any color that a land an opponent controls could produce.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

{3}{G}, {T}: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

+1: Create a 3/3 green Beast creature token.

-3: Draw cards equal to the greatest power among creatures you control.

-6: Create a 6/6 green Wurm creature token for each land you control.

Each spell you cast that's red or green costs {1} less to cast.

{X}{X}{1}: Destroy target noncreature artifact with mana value X.

{R}: Creatures you control gain haste until end of turn.

{3}{R}{R}: Create a 5/5 red Dragon Spirit creature token with flying. Activate only if you control an attacking modified creature. (Equipment, Auras you control, and counters are modifications.)

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

{1}, {T}: Add {R}{G}.

Flash

Commander creatures you control get +2/+2.

Commanders you control have hexproof.

Equipped creature gets +3/+2.

Whenever a legendary creature enters the battlefield under your control, you may attach Hero's Blade to it.

Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

Whenever Hiveheart Shaman attacks, you may search your library for a basic land card that doesn't share a land type with a land you control, put that card onto the battlefield, then shuffle.

{5}{G}: Create a 1/1 green Insect creature token. Put X +1/+1 counters on it, where X is the number of basic land types among lands you control. Activate only as a sorcery.

Flying

{3}{R}: Destroy target artifact. Hoard-Smelter Dragon gets +X/+0 until end of turn, where X is that artifact's mana value.

{X}{X}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)

When Hydra Broodmaster becomes monstrous, create X X/X green Hydra creature tokens.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy.

Equip {3}

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

{2}{R}: Creatures you control get +1/+0 until end of turn. If this is the third time this ability has resolved this turn, creatures you control gain first strike until end of turn.

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life.

Target creature gets +4/+4 until end of turn.

{2}{G}: Create a 1/1 green Saproling creature token.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

When Kogla, the Titan Ape enters the battlefield, it fights up to one target creature you don't control.

Whenever Kogla attacks, destroy target artifact or enchantment defending player controls.

{1}{G}: Return target Human you control to its owner's hand. Kogla gains indestructible until end of turn.

Menace

Equipped creature gets +2/+2 and has menace.

Whenever Komainu Battle Armor or equipped creature deals combat damage to a player, goad each creature that player controls.

Reconfigure {4} ({4}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Destroy target artifact or enchantment.

{8}: Creatures you control get +3/+0 until end of turn.

As an additional cost to cast this spell, sacrifice a creature.

Draw cards equal to the sacrificed creature's power.

{T}: Add {G}.

{X}, {T}: Untap X target lands.

As an additional cost to cast this spell, sacrifice a creature.

You draw cards equal to the sacrificed creature's power, then you gain life equal to its toughness.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

{2}{G}: Create a 1/1 green Saproling creature token.

Sacrifice a Saproling: Saproling creatures get +1/+1 until end of turn.

Equipped creature gets +2/+2.

Whenever Ogre-Head Helm or equipped creature deals combat damage to a player, you may sacrifice it. If you do, discard your hand, then draw three cards.

Reconfigure {3} ({3}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

At the beginning of your end step, if creatures you control have total power 8 or greater, draw a card.

{2}: Add one mana of any color.

As long as it's your turn, Radha, Heart of Keld has first strike.

You may look at the top card of your library any time, and you may play lands from the top of your library.

{4}{R}{G}: Radha gets +X/+X until end of turn, where X is the number of lands you control.

{4}{G}: Double Reckless Amplimancer's power and toughness until end of turn.

Draw cards equal to the greatest power among creatures you control.

You may cast a spell with mana value 5 or less from your hand without paying its mana cost.

{1}, Sacrifice a Scarecrow: Draw a card.

{4}, {T}: Return target artifact creature card from your graveyard to the battlefield.

Draw a card for each creature you control.

Ferocious -- You gain 4 life for each creature you control with power 4 or greater.

Whenever a creature you control becomes the target of a spell or ability an opponent controls, you may draw a card.

Equipped creature gets +2/+0.

As long as equipped creature is a Human, it gets an additional +1/+0.

Equip {2}

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.

{4}, {T}, Discard your hand: Draw a card for each creature you control.

{T}: Add {C}{C}.

Trample

{5}: Permanents you control gain indestructible until end of turn.

{5}, Exile Soul of New Phyrexia from your graveyard: Permanents you control gain indestructible until end of turn.

Reach

{3}{G}{G}: Create a 3/3 green Beast creature token.

{3}{G}{G}, Exile Soul of Zendikar from your graveyard: Create a 3/3 green Beast creature token.

Draw cards equal to the power of target creature you control.

{2}: Target creature gains trample until end of turn. If this is the third time this ability has resolved this turn, you may add {R}{R}{R}{R}{R}{R}{R}{R}.

{T}, Tap an untapped creature you control: Add one mana of any color.

Flying

{2}: Steel Hellkite gets +1/+0 until end of turn.

{X}: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by Steel Hellkite this turn. Activate only once each turn.

{3}, {T}: Create a colorless snow artifact token named Icy Manalith with "{T}: Add one mana of any color."

{6}{R}{G}, {T}: Look at the top four cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

{T}: Add {C}.

{T}: Add {R} or {G}. Talisman of Impulse deals 1 damage to you.

Whenever Tanuki Transplanter or equipped creature attacks, add an amount of {G} equal to its power. Until end of turn, you don't lose this mana as steps and phases end.

Reconfigure {3} ({3}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Other Dinosaurs you control get +1/+1.

{5}{G}: Create a 3/3 green Dinosaur creature token with trample.

At the beginning of your upkeep, draw a card if you control the creature with the greatest power or tied for the greatest power.

Until end of turn, creatures you control get +1/+1 and gain trample and infect. (Creatures with infect deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Equipped creature has "{3}, {Q}: This creature gets +2/+2 until end of turn." ({Q} is the untap symbol.)

Equip {0}

Enchant Forest

As Utopia Sprawl enters the battlefield, choose a color.

Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.

{8}: Valakut Invoker deals 3 damage to any target.

This spell can't be countered.

{R/G}: Target spell can't be countered.

Whenever you cast a noncreature spell, put an oil counter on Vindictive Flamestoker.

{6}{R}, Sacrifice Vindictive Flamestoker: Discard your hand, then draw four cards. This ability costs {1} less to activate for each oil counter on Vindictive Flamestoker.

{T}: Add an amount of {G} equal to Viridian Joiner's power.

Walking Ballista enters the battlefield with X +1/+1 counters on it.

{4}: Put a +1/+1 counter on Walking Ballista.

Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

At the beginning of your end step, untap all lands you control.

{8}: Target creature gets +5/+5 and gains trample until end of turn.